Photo: Gary Meulemans / Unsplash
American
Split Pea Soup
Rated by 11 diets
Diet-compatible alternatives that share a role with this dish.
Typical ingredients
- dried split peas
- ham hock
- carrots
- celery
- onion
- chicken broth
- bay leaf
- thyme
Specific recipes may vary.
Diet Ratings
Split pea soup is fundamentally incompatible with ketogenic diets. Dried split peas are legumes with an extremely high net carb content — approximately 35-40g net carbs per half-cup cooked serving. A standard bowl of split pea soup could easily contain 40-60g net carbs from the peas alone, which would exceed or obliterate an entire day's keto carb allowance in a single meal. The ham hock and chicken broth are keto-friendly, and the vegetables (carrots, celery, onion) add modest additional carbs, but the split peas are the disqualifying ingredient. There is no portion size small enough to make a bowl of this soup practical on keto without it ceasing to be split pea soup in any meaningful sense.
This split pea soup contains multiple animal products that make it entirely incompatible with a vegan diet. Ham hock is a pork product (animal flesh), and chicken broth is an animal-derived liquid. Both are fundamental, non-incidental ingredients that define the dish's flavor profile. The base ingredient — dried split peas — is plant-based and vegan-friendly, but the soup as described is not. A vegan version could be made by substituting vegetable broth for chicken broth and omitting the ham hock entirely (adding smoked paprika or liquid smoke for a similar depth of flavor).
Split Pea Soup is fundamentally incompatible with the paleo diet. Dried split peas are legumes — one of the most clearly excluded food groups in paleo due to their lectin and phytate content, which paleo authorities argue cause gut irritation and nutrient malabsorption. The ham hock is also problematic, as it is a processed, cured meat typically containing added salt, nitrates, and preservatives, placing it firmly in the 'avoid' category. Chicken broth may contain additives depending on preparation. The vegetables (carrots, celery, onion) and herbs (bay leaf, thyme) are paleo-compliant, but the foundational ingredient — split peas — makes this dish a non-starter under any mainstream paleo framework.
Split pea soup has a strong Mediterranean-compatible foundation: dried split peas are an excellent legume base, and the aromatic vegetables (carrots, celery, onion) and herbs (bay leaf, thyme) are quintessentially Mediterranean. However, the ham hock is a cured, processed red/pork meat high in saturated fat and sodium, which contradicts Mediterranean principles. Red and processed meats are limited to a few times per month. The chicken broth is acceptable. The dish could easily be made fully Mediterranean-compliant by omitting the ham hock or substituting a small amount of olive oil and smoked paprika for flavor. As written, the legume base earns points, but the processed pork component pulls the score into caution territory.
Some traditional Mediterranean bean soups (e.g., Italian ribollita or Greek fasolada) do occasionally include small amounts of cured pork for flavoring as part of regional "cucina povera" traditions, where the meat is a minor flavoring agent rather than the primary protein — under this lens, a ham hock used sparingly in a largely legume-based soup could be considered marginally acceptable within a Mediterranean-inspired framework.
Split Pea Soup is fundamentally incompatible with the carnivore diet. The primary ingredient is dried split peas, a legume — one of the most explicitly excluded food categories on carnivore. The soup also contains carrots, celery, and onion (vegetables), bay leaf and thyme (plant-based spices/herbs), all of which are plant-derived and strictly off-limits. While the ham hock and chicken broth are animal-derived and would otherwise be acceptable, they represent a minor component of a dish that is overwhelmingly plant-based in composition. No amount of carnivore-friendly adjustments can salvage this dish — it would need to be an entirely different recipe.
Split peas are legumes, which are explicitly excluded from the Whole30 program. Unlike green beans, sugar snap peas, and snow peas — which are specifically excepted — dried split peas fall squarely within the excluded legume category. This is the disqualifying ingredient regardless of all other components. Additionally, ham hock and commercial chicken broth commonly contain added sugar, sulfites, or other non-compliant additives, though these are secondary concerns since the split peas alone make this dish off-limits.
Split pea soup contains multiple high-FODMAP ingredients that make it unsuitable during the elimination phase. Dried split peas are very high in GOS (galacto-oligosaccharides) and fructans — even a small 1/4 cup serving of cooked split peas is high-FODMAP per Monash, and soup recipes use them as the primary bulk ingredient. Onion is one of the highest-FODMAP foods tested, rich in fructans, and is a core aromatic in this dish. Celery contains polyols (mannitol) and becomes high-FODMAP at typical soup quantities. Chicken broth can accumulate FODMAPs if made with onion or garlic. The ham hock and carrots are generally low-FODMAP, and thyme and bay leaf are safe as herbs. However, the combination of split peas (GOS/fructans), onion (fructans), and celery (polyols) at the volumes used in a standard bowl of soup makes this dish clearly high-FODMAP with no realistic way to reduce servings to a safe level while still constituting a meaningful meal.
Split pea soup has a strong nutritional foundation — dried split peas are a DASH-approved legume rich in fiber, potassium, magnesium, and plant protein, and the vegetables (carrots, celery, onion) are core DASH foods. However, the primary protein source — ham hock — is processed red meat that is high in sodium and saturated fat, both of which DASH explicitly limits. Standard chicken broth adds further sodium, and together these ingredients can push a single serving well above 800–1,200mg sodium, a significant portion of even the standard DASH daily limit of 2,300mg. The base dish concept is DASH-compatible but the execution as written is not. Substituting a smoked turkey leg or omitting the ham and using low-sodium broth would substantially improve the rating.
Split pea soup sits in Zone 'caution' territory primarily because dried split peas are a relatively high-carbohydrate, moderate-glycemic legume — they count as a carb block in Zone, not a protein block, despite their protein content. A typical serving carries significant net carbs (roughly 20-25g per cup), which can crowd out carb blocks quickly. The ham hock introduces useful protein but also brings saturated fat and sodium, making it less ideal than lean Zone proteins like skinless chicken breast. On the positive side, the vegetable base (carrots, celery, onion) contributes favorable low-glycemic carbs and polyphenols, and split peas do offer fiber which lowers net carb impact somewhat. The dish can fit into Zone if portions are carefully controlled — roughly a half-cup to one-cup serving paired with a lean protein supplement and a source of monounsaturated fat (e.g., a drizzle of olive oil) — but it is not a naturally balanced Zone meal on its own. The ham hock fat content and sodium also warrant consideration from an anti-inflammatory standpoint in Sears' later writings.
Some Zone practitioners treat legumes like split peas more favorably given their high fiber content, low glycemic load per serving (despite moderate GI), and combination of protein and carbs that can simplify block counting. Dr. Sears' later anti-inflammatory work also acknowledges that legumes provide beneficial polyphenols. A smaller, controlled portion of this soup could be viewed as a reasonable Zone-compatible component rather than a caution item by practitioners who emphasize glycemic load over glycemic index.
Split pea soup has a genuinely mixed anti-inflammatory profile. On the positive side, dried split peas are legumes — an emphasized food in the anti-inflammatory framework due to their fiber content, plant-based protein, and low glycemic impact. Carrots, celery, and onion contribute antioxidants and anti-inflammatory polyphenols. Thyme and bay leaf add modest anti-inflammatory phytonutrients. The overall vegetable base is solid. However, the primary protein here is ham hock — a processed, cured, high-sodium pork product that is also high in saturated fat. Red and processed meats are squarely in the 'limit' or 'avoid' column under anti-inflammatory frameworks. The processing (curing, smoking) of ham hock introduces nitrates/nitrites and sodium, both of which are associated with pro-inflammatory effects. Chicken broth is neutral to mildly positive. The dish is not deeply problematic — the legume and vegetable base offers genuine anti-inflammatory benefit — but the ham hock drags the profile down meaningfully. A version made with a smoked turkey leg, or made vegetarian entirely, would score considerably higher. As written, this is a moderate-caution dish acceptable occasionally but not ideal for regular anti-inflammatory eating.
Some anti-inflammatory practitioners, including those following Mediterranean-adjacent frameworks, would argue the legume and vegetable base is dominant enough to classify this as acceptable comfort food with net neutral-to-positive effects, especially if fat is skimmed. Conversely, stricter AIP or anti-processed-meat advocates would rate this lower, emphasizing that ham hock introduces nitrates and saturated fat that actively counteract the legume benefits.
Split pea soup has a strong nutritional profile for GLP-1 patients in several respects: dried split peas are high in both protein (~16g per cooked cup) and fiber (~16g per cooked cup), making them one of the better plant-based options for hitting daily targets. The vegetables (carrots, celery, onion) add micronutrients and additional fiber, and the broth base is easy to digest and hydrating. The soup format is naturally portion-friendly and gentle on a slowed digestive system. However, the ham hock is the limiting factor — it is a fatty, processed cut of pork, high in saturated fat and sodium, and falls into the category of fatty red/processed meats that GLP-1 guidelines recommend limiting. The fat from the ham hock is rendered into the broth during cooking, meaning the fat content is distributed throughout the dish rather than removable. Sodium load from both the ham hock and chicken broth may also be a concern. A modified version using diced lean ham or omitting meat entirely would score higher (8-9).
Some GLP-1-focused dietitians accept ham hock-based split pea soup as a practical, whole-food option given its exceptional fiber and protein density from the peas, arguing the fat content per serving is moderate and the overall nutrient profile outweighs the saturated fat concern. Others flag the processed pork and sodium as meaningful drawbacks that conflict with GLP-1 liver health and GI tolerance guidance, particularly on higher-dose weeks when nausea sensitivity increases.
Controversy Index
Score range: 1–6/10. Higher controversy = more disagreement between diets.